Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-06-2001, 08:58 AM
Registered User
 
Join Date: Nov 2001
Location: Ohio
Posts: 13
Question Help on Repairing Xenon Headlight

The driver side Xenon headlight of my 1998 E-320 will not light up more than 3 seconds. Most of the times, it will go dead as soon as I turn it on. When it can stay on for 3 seconds, it light up with bluish color but cannot turn to whiter color as the other does before it dies. I don't know if it is caused by the defective bulb or ballast.

I tried several times to open the headlight assembly but without any success, especially because the opening behind the assembly is very narrow and the cold weather is coming in.

Does anyone have suggestion on how the Xenon system works, how I may diagnose this problem, or have a detail procedure on fixing this problem so that I may get educated?

Thank you very much for your help.

Last edited by sdjumin; 11-06-2001 at 09:08 AM.
Reply With Quote
  #2  
Old 11-06-2001, 12:27 PM
ATLD's Avatar
Registered User
 
Join Date: Oct 2001
Location: PA
Posts: 272
I do not know specifically your car but I know HID theory; I presume you have Zenon HID. If this is the case, the light fixture is composed of a variable voltage ballast and the light element (bulb) itself. The setup is similar to an arc-lamp or florescent lamp, where the initial power is used to vaporize and then ionize the gas in your bulb. Then power can be cut back as the RXN stabilizes. That is why they take a few seconds to come on to full power (when cold). Also, the high beam uses the same element as the low beam, just at a different voltage and current.

From the symprom, it sounds like the bulb may be broken (possibly cracked) allowing the precious gasses you want to energise to escape; that may be why it only works for a second or two (as the gasses energise they expand and escape) and then die. Otherwise, it is very unlikely the ballast would break; but I cannot gurantee this. Also if it was the ballast, I would presume the light would do nothing at all.

Isn't your car still under warranty?

Good Luck!

Adam
Reply With Quote
  #3  
Old 11-06-2001, 12:37 PM
Registered User
 
Join Date: Nov 2001
Location: Ohio
Posts: 13
Thanks, Adam.

My car was just out of warranty a few weeks ago. The dealer wants 1.5 hours to diagnose the problem and another 1.5 hours to do any repair. They think that I would need to have the whole assembly replaced.

Do you know any procedure to fix Xenon headlight? Because it is just a bulb, I may try to do it myself, although my technical skill is almost zero.

Thanks for any suggestion and advice.
Reply With Quote
  #4  
Old 11-06-2001, 02:51 PM
ATLD's Avatar
Registered User
 
Join Date: Oct 2001
Location: PA
Posts: 272
I do not have experience with your model, but I'd presume that there is some type of fastener that is meant for easy removal (knob-like) that affixes the bulb to the fixture. If you can see the back of the fixture, experiment and observe how the bulb is held on. If the ballast is attached to the back of the fixture (blocking your path to the bulb), you may have to remove the entire fixture, with ballast. Remember that if you are doing this yourself USE CLEAN RUBBER GLOVES TO HANDLE THE BULBS!!! HID lights, like halogens, Hg, or Na vapor bulbs, get really hot. The oils from your skin will get onto the bulb lens and absorb light and convert it to heat thus reshattering your bulb you just repalced where you touched it. This may have been the case if your bulb had been replaced before (perhaps by someone not as carefull as we'd like).

Also, if you end up having to remove the entire fixture, you can always take it to a shop to have the ballast tested. Or if you can, you can try swapping bulbs with the bulb on the working side of your car. If, by testing you discover the working bulb does not work in your other socket (the questioned side), you either have a poor connection (unlikely in a 98') or a damaged ballast (also unlikely).

Worst case senario, you need a new ballast and you have an extra bulb.

Good Hunting
Adam
Reply With Quote
  #5  
Old 11-06-2001, 11:31 PM
Registered User
 
Join Date: Nov 2001
Location: Ohio
Posts: 13
Thanks, Adam. Your advice is really valueable. I would try to find time and right weather to do what you have suggested.
Reply With Quote
  #6  
Old 11-07-2001, 03:48 AM
David C Klasse's Avatar
CheFrac is Back!
 
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
Lightbulb A Different Approach...

If your car is only a few weeks (or a few thousand miles) out of warranty, then I would try and get the dealer to fix it! Many times they will. Try a different dealer.
I have heard that Mercedes-Benz dealers have been pretty good about this.
GOOD LUCK!
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
Reply With Quote
  #7  
Old 11-07-2001, 10:02 AM
Registered User
 
Join Date: Nov 2001
Location: Ohio
Posts: 13
Thanks David for the suggestion. I will try it to see if the dealer may want to do it.
Reply With Quote
  #8  
Old 11-08-2001, 11:50 PM
Registered User
 
Join Date: Nov 2001
Location: Ohio
Posts: 13
I tried to call the dealer and they refused to do it. I guess I would wait for warmer weather to look at my headlight. Right now, one Xenon plus fog lights are bright enough to illuminate roads at night. Thanks.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
w123 Xenon Headlight Kit omegabenz Mercedes Used Parts For Sale & Wanted 1 09-10-2004 03:47 AM
Looking for 98 C43 Xenon headlight.......broken or not...... vcci Mercedes Used Parts For Sale & Wanted 1 07-30-2004 11:34 PM
Will those blue/white xenon headlight bulbs damage any wiring? bboyer32 SL Forum 1 09-17-2003 11:31 AM
Xenon Headlight on CLK320 2003CLK320 Tech Help 2 03-27-2003 01:43 PM



All times are GMT -4. The time now is 07:12 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page